Can't Stop Spam Registrations.. HELP Please! (2 posts)

Hi all! I've posted this before with no response and I'm not sure why but I really hope you can help. I've searched the forums repeatedly and can't seem to find an answer to this issue. I'm getting literally HUNDREDS of spam registrations a day. I don't know how to stop them. I have a custom login page with my premium theme so normal average registrants are using that and those notifications are coming from one email and on the other hand, all these spam registrants are somehow managing to sign up on my site somewhere else and I'm not sure how they're getting there.

I'm good with WP but not a genius or even amazing (yet) but I just cannot seem to figure this out. I've tried different plugins that were recommended and a couple conflicted with my theme and the other ones just didn't work. Any suggestions? Thanks so much in advance.